Beginning of main content

Cheap LHR to SEA Flights

Prices were available within the past 7 days and starts at CA $925 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

London to Seattle route information

Origin Airport Heathrow
Destination Airport Seattle - Tacoma Intl.
Distance 7,657 km

London to Seattle Flights

How Expedia save you money on your flight?

One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!

Flight deals with Expedia

How to find cheap flights with Expedia?

When it comes to finding cheap Expedia flights, the best time to do it is during low season or shoulder season, which ranges between late January to May.

Book a cheap flight with Expedia

Apr 2, 2018

This was our first time travelling with Virgin Atlantic and we were extremely impressed.

Mar 18, 2018

Need better wifi but otherwise one of my favourite flights ever.

Jan 30, 2018

Very good experience.

Jul 4, 2017

There were two main components to the flight, Abu Dhabi to London and then Londo to Abu Dhabi. The seating and service in the premium econdomy seats were better in the Abu Dhabi to London portion of the flight than they were with in the London to Seattle portion of the flight.